Filters








21 Hits in 9.0 sec

Hybrid Visualization for White Matter Tracts using Triangle Strips and Point Sprites

Dorit Merhof, Markus Sonntag, Frank Enders, Christopher Nimsky, Peter Hastreiter, Guenther Greiner
2006 IEEE Transactions on Visualization and Computer Graphics  
Diffusion tensor imaging is of high value in neurosurgery, providing information about the location of white matter tracts in the human brain.  ...  Overall, the presented approach is faster than existing techniques of similar visualization quality and at the same time allows for real-time rendering of dense bundles encompassing a high number of fibers  ...  ACKNOWLEDGEMENTS This work was supported by the Deutsche Forschungsgemeinschaft in the context of SFB 603, Project C9.  ... 
doi:10.1109/tvcg.2006.151 pmid:17080850 fatcat:5yb4422irza55l7rmbl5vjmhpi

Correction of susceptibility artifacts in diffusion tensor data using non-linear registration

D. Merhof, G. Soza, A. Stadlbauer, G. Greiner, C. Nimsky
2007 Medical Image Analysis  
Diffusion tensor imaging can be used to localize major white matter tracts within the human brain.  ...  For surgery of tumors near eloquent brain areas such as the pyramidal tract this information is of importance to achieve an optimal resection while avoiding post-operative neurological deficits.  ...  Sorensen (Department of Radiology/Nuclear Magnetic Resonance Center, Massachusetts General Hospital, Boston, USA) for providing the DTI task card software we used for the computation of the fiber tracts  ... 
doi:10.1016/j.media.2007.05.004 pmid:17664081 fatcat:2askd5crt5e3nktsyeg2vjqigi

Biomedical Visualization [chapter]

Chris R. Johnson, Xavier Tricoche
2009 Advances in Biomedical Engineering  
In DT-MRI of nervous tissue, fiber tractography seeks to create models of the pathways of axon bundles in white matter tracts.  ...  Frames from an animation corresponding to isotropic white matter. Bottom row. Frames of the animation obtained for anisotropic white matter.  ... 
doi:10.1016/b978-0-444-53075-2.00006-x fatcat:ewd3kgeki5fthj55kfoce6bkcm

Advanced Algorithms in Medical Computer Graphics [article]

Jan Klein, Dirk Bartz, Ola Friman, Markus Hadwiger, Bernhard Preim, Felix Ritter, Anna Vilanova, Gabriel Zachmann
2008 Eurographics State of the Art Reports  
This paper summarizes advanced algorithms for medical visualization with special focus on risk structures such as tumors, vascular systems and white matter fiber tracts.  ...  Advanced algorithms and efficient visualization techniques are of major importance in intra-operative imaging and image-guided surgery.  ...  ., of the heart muscle or white matter fiber tracts.  ... 
doi:10.2312/egst.20081043 fatcat:7pk4swpmmvb4vl576xjm3leuue

Visual computing for medical diagnosis and treatment

Jan Klein, Ola Friman, Markus Hadwiger, Bernhard Preim, Felix Ritter, Anna Vilanova, Gabriel Zachmann, Dirk Bartz
2009 Computers & graphics  
Diagnostic algorithms and efficient visualization techniques are of major importance for preoperative decisions, intra-operative imaging and image-guided surgery.  ...  This state-of-the-art report summarizes visual computing algorithms for medical diagnosis and treatment.  ...  Applications: DTI was initially developed for visualizing white matter in the brain but its use has since been extended to include, for example, tumor dissection [31, 32] and investigations of ischemic  ... 
doi:10.1016/j.cag.2009.04.006 fatcat:bckkhjox7fcq7kf7bi7ylyvbyq

Diffusion tensor imaging and beyond

Jacques-Donald Tournier, Susumu Mori, Alexander Leemans
2011 Magnetic Resonance in Medicine  
Three-dimensional (3D) reconstruction technologies for white matter tracts are also developing beyond the initial deterministic line-propagation models (17-20).  ...  However, the acceleration factor (parallel imaging factor) is practically limited to 2-4 depending on the number of receiver channels and coil geometry.  ...  Axons that share a similar destination tend to form larger bundles, called white matter tracts. There are many prominent tracts that are large enough to observe visually in human brains.  ... 
doi:10.1002/mrm.22924 pmid:21469191 pmcid:PMC3366862 fatcat:vvyodydokfhyhntenpctq34rxq

Structure-Aware Trail Bundling for Large DTI Datasets

Steven Bouma, Christophe Hurter, Alexandru Telea
2020 Algorithms  
Our method can handle 3D datasets of hundreds of thousands of trails at interactive rate, has parameters for the most of which good preset values are given, and produces visualizations that have been found  ...  , in a small-scale user study involving five medical professionals, to be better in occlusion reduction, conveying the connectivity structure of the brain, and overall clarity than existing methods for  ...  Fiber tracking has several applications, including noninvasive visualization of white matter pathways, segmenting of specific tracts in the brain for image analysis, and relating white matter tract anatomy  ... 
doi:10.3390/a13120316 fatcat:otufyos6hfeo7lyk7mna64rybq

Enhanced Visualization of Diffusion Tensor Data for Neurosurgery [chapter]

Frank Enders, Dorit Merhof, Peter Hastreiter, Marc Stamminger, Christopher Nimsky
Bildverarbeitung für die Medizin 2005  
In this work an integrated method for visualizing this kind of data is presented utilizing glyph-based and streamline visualization in combination with anatomical MR data to obtain a maximum of information  ...  WM tracts are thereby of major interest and the ability to distinguish between different WM patterns is subject of growing research.  ...  The fusion of tracking results and anatomical data already provided a good spatial impression about white matter tracts and tumor.  ... 
doi:10.1007/3-540-26431-0_56 dblp:conf/bildmed/EndersMHSN05 fatcat:u55cndbbzbg4lk3cugwpsvmtl4

Visualization of uncertainty in fiber tracking based on diffusion tensor imaging [article]

Brecheisen, R (Ralph), Haar Romeny, BM (Bart) Ter, Vilanova Bartroli, A (Anna), Platel, B (Bram)
2012
Acknowledgements Many people have contributed to the realization of this thesis, either in a direct and undeniable way or indirectly through interesting and fruitful discussions.  ...  in brain white matter.  ...  For the purpose of this thesis we limit ourselves to a description of only the major white matter bundles.  ... 
doi:10.6100/ir732944 fatcat:h66zniighjgttehjwna6cs2oru

Visualization of White Matter Tracts with Wrapped Streamlines

F. Enders, N. Sauber, D. Merhof, P. Hastreiter, C. Nimsky, M.S. Stamminger
IEEE Visualization 2005 - (VIS'05)  
An obvious way to visualize this data is to focus on the anisotropic areas using the major eigenvector for tractography and rendering lines for visualization of the simulation results.  ...  From the medical point of view, the data is of special interest due to different diffusion characteristics of varying brain tissue allowing conclusions about the underlying structures such as white matter  ...  In fact, a predominant part of the brain consists of such white matter.  ... 
doi:10.1109/vis.2005.123 fatcat:bd4e3cqruraqznkauggf73flsu

Visualization of White Matter Tracts with Wrapped Streamlines

F. Enders, N. Sauber, D. Merhof, P. Hastreiter, C. Nimsky, M. Stamminger
VIS 05. IEEE Visualization, 2005.  
An obvious way to visualize this data is to focus on the anisotropic areas using the major eigenvector for tractography and rendering lines for visualization of the simulation results.  ...  From the medical point of view, the data is of special interest due to different diffusion characteristics of varying brain tissue allowing conclusions about the underlying structures such as white matter  ...  In fact, a predominant part of the brain consists of such white matter.  ... 
doi:10.1109/visual.2005.1532777 dblp:conf/visualization/EndersSMHNS05 fatcat:lw2iwnkcerdvdjfwsz7dsmfpim

GPU-based visualization techniques for the interactive exploration of diffusion MRI data [article]

Peeters, THJM (Tim), Haar Romeny, BM (Bart) Ter, Vilanova Bartroli, A (Anna)
2009
The glyphs on the front cover represent data from a HARDI scan of Vesna Prčkovska's brain (figure 8.10(b) on page 115).  ...  Financial support for the publication of this thesis was kindly provided by the Advanced School for Computing and Imaging (ASCI), and the Technische Universiteit Eindhoven.  ...  Brain white matter structure The tissue in a human brain can be roughly divided in gray matter and white matter.  ... 
doi:10.6100/ir653274 fatcat:5qp4ninwvfdizp5wi76ih2ubaa

New Methods in Diffusion-Weighted and Diffusion Tensor Imaging

Roland Bammer, Samantha J. Holdsworth, Wouter B. Veldhuis, Stefan T. Skare
2009 Magnetic Resonance Imaging Clinics of North America  
This article aims to provide a succinct overview of some of these new developments and a description of some of the major challenges associated with DWI.  ...  for DWI.  ...  Linda Chang, Thomas Ernst, and Andrew Stenger (University of Hawaii).  ... 
doi:10.1016/j.mric.2009.01.011 pmid:19406353 pmcid:PMC2768271 fatcat:6ghbmckysvcprnmbewpzujjkpm

Visualization of uncorrelated point data [article]

Guido Reina, Universität Stuttgart, Universität Stuttgart
2009
The contribution for the rendering of hundreds of thousands of application-specific glyphs is a Graphics-Processing-Unit(GPU)-based solution that allows the exploration of datasets that exhibit a moderate  ...  To improve the visualization of datasets with many attributes and only a moderate number of points, methods for the interactive reduction of dimensionality and analysis of the influences of different dimensions  ...  Due to the anatomical structure of neuronal pathways this diffusion is anisotropic in areas of major white matter tracts.  ... 
doi:10.18419/opus-2649 fatcat:unbdsuek5jc3hesuiccjbqsq2q

Probing Tissue Microstructure Using Susceptibility Contrast Magnetic Resonance Imaging Probing Tissue Microstructure Using Susceptibility Contrast Magnetic Resonance Imaging

Russell Dibb, G Allan, Johnson, Craig, Jeffrey Petrella, Russell Dibb, G Allan, Johnson, Craig Henriquez, Jeffrey, Petrella, Gregg Trahey (+1 others)
2016 unpublished
, including myocardium and central nervous system white matter.  ...  In the brain, the introduction of paramagnetic contrast agents actually makes white matter tissue regions appear more diamagnetic relative to the reference susceptibility.  ...  The model microstructural parameters for predicting white---gray matter susceptibility contrast in the hippocampal commissure of the mouse brain are based on literature values.  ... 
fatcat:fe2gocbkdzhkhaivdtcjr4qbji
« Previous Showing results 1 — 15 out of 21 results